Will fresh plugs lean out my motor?
6/29/07, 08:55 AM
#1
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Will fresh plugs lean out my motor?
I'm going to change out my plugs tonight to try and recover some of my lost horsepower. Will this cause the car to go lean? I'm worried because I'm running nitrous and lean + nitrous = very bad.
6/29/07, 09:39 PM
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Plugs won't change AFR. The issue with running nitrous is higher combustion chamber temps and pressure leading to detonation. With any big time power adder you should run colder plugs which are less prone to detonation. The downside of colder plugs is a higher tendency to carbon foul during normal driving.
6/30/07, 12:32 PM
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6/30/07, 03:06 PM
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6/30/07, 05:38 PM
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It might be. Under street driving conditions, cold plugs can load up. For street driving you are better off with the recommended heat range.
7/2/07, 10:01 AM
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Here's what the plugs looked like:
Hmmmmm
I also want to clear up a little confusion. The plugs are the same heat range as before but they are a step colder than stock.
Hmmmmm
I also want to clear up a little confusion. The plugs are the same heat range as before but they are a step colder than stock.
7/2/07, 11:38 AM
#18
FWIW, I ran the same set of HT1 plugs for 10 months, 13,000 miles and well over 500 runs, without a single issue. A couple weeks ago, the HT1s were replaced with a new set of HT0s, and they lasted exactly one day (4 runs at the track, and less than 200 street miles). I immediately replaced them with a new set of HT1s again, and everything seems fine again.
Just my experience...
Just my experience...
7/2/07, 11:58 AM
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FWIW, I ran the same set of HT1 plugs for 10 months, 13,000 miles and well over 500 runs, without a single issue. A couple weeks ago, the HT1s were replaced with a new set of HT0s, and they lasted exactly one day (4 runs at the track, and less than 200 street miles). I immediately replaced them with a new set of HT1s again, and everything seems fine again.
Just my experience...
Just my experience...
